DS18S20-PAR Просмотр технического описания (PDF) - Dallas Semiconductor -> Maxim Integrated

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DS18S20-PAR

1-Wire® Parasite-Power Digital Thermometer

Dallas Semiconductor -> Maxim Integrated 

DS18S20-PAR

DS18S20-PAR FUNCTION COMMAND SET Table 4

1-Wire Bus Activity

Command

Description

Protocol After Command is Issued Notes

TEMPERATURE CONVERSION COMMANDS

Convert T

Initiates temperature

44h

None

1

conversion.

MEMORY COMMANDS

Read Scratchpad Reads the entire scratchpad

BEh DS18S20-PAR transmits up 2

including the CRC byte.

to 9 data bytes to master.

Write Scratchpad Writes data into scratchpad

4Eh

Master transmits 2 data

3

bytes 2 and 3 (TH and TL).

bytes to DS18S20-PAR.

Copy Scratchpad Copies TH and TL data from the 48h

None

1

scratchpad to EEPROM.

Recall E2

Recalls TH and TL data from

B8h

DS18S20-PAR transmits

EEPROM to the scratchpad.

recall status to master.

NOTES:

1. The master must enable a strong pullup on the 1-wire bus during temperature conversions and copies

from the scratchpad to EEPROM. No other bus activity may take place during this time.

2. The master can interrupt the transmission of data at any time by issuing a reset.

3. Both bytes must be written before a reset is issued.

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